Alexander of Hales

Alexander de Hales Commentary
Expositio libri De anima
Summa Halensis

Wikipedia Data

Alexander of Hales, O.F.M., (c. 1185 – 21 August 1245) (also Halensis, Alensis, Halesius, Alesius) also called Doctor Irrefragibilis (by Pope Alexander IV in the Bull De Fontibus Paradisi) and Theologorum Monarcha was a theologian and philosopher important in the development of Scholasticism and of the Franciscan School. (Wikipedia Abstract)